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-BARSIC- [3]
3 years ago
9

A science experiment involves periodically measuring the number of mold cells present on a piece of bread. At the start of the e

xperiment, There are 50 mold cells. Each time a periodic observation is made, the number of mold cells triples. For example, observation #1, there are 150 mold cells.​

Mathematics
1 answer:
fomenos3 years ago
3 0

Answer:

  • y = 50·3^x
  • (2, 450), (3, 1350), (4, 4050), (5, 12150)

Step-by-step explanation:

The problem statement tells you each observed count is 3 times the last one.

__

Expressed as an exponential function with an initial value of 50 and a growth factor of 3, the formula is ...

  y = (initial value)×(growth factor)^x

  y = 50·3^x

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Can someone help me solve these.
vazorg [7]

(x-1)/-3 = (x+5)/6

You want to get x by itself. Start by multiplying both sides by -3 and 6:

6(x-1) = -3(x+5)

Distribute:

6x - 6 = -3x + 5

Add 6 and 3x to both sides:

6x + 3x = 5 + 6

9x = 11

Divide both sides by 9 to get x by itself:

x = 11/9

4 0
3 years ago
Marci has a total 50 stamps, consisting of 25 cent stamps and halves the number of 15 cent stamps, they will be worth of $16.50.
lukranit [14]

Answer:

Originally there were 30, 25 cents stamps and 20, 15 cent stamps.

Step-by-step explanation:

We are given the following in the question;

Let x be the number of 25 cents stamps and y be the number of 15 cents stamps.

Marci has a total 50 stamps.

Thus, we can write

x+y=50

Also,

x = \dfrac{y}{2}

Total cost = $16.50

Thus, we can write the equation:

0.25x + 0.15y = 16.50

Solving the two equations:

0.25\dfrac{y}{2} + 0.15y = 16.50\\\\(0.125+0.15)y = 16.50\\y = 60\\x = 30

Originally,

x+y = 50\\30 + y = 50\\y = 20

Thus, originally there were 30, 25 cents stamps and 20, 15 cent stamps.

7 0
2 years ago
How to write 246,305 in expanded notation
gregori [183]

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3 0
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Read 2 more answers
Pls answer 5a b and c for brianlist
melomori [17]

5.a) Steve - 60=5×12

= <u>5×3×2×2</u>

5.b) Ian - 60=6×10

= <u>3×2×5×2.</u>

<u>Discussion</u> - The prime factors reduce to the same numbers in both Steve's and Ian's case.

5.c) Case 1 of 48 = 6×8

= <u>3×2×2×2×2.</u>

Case 2 of 48 = 12×4

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Write the repeating decimal as a mixed number.
Basile [38]
The answer is 11 & 51/100!
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3 years ago
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